Identical twins Heather and Rose MacDowell waited tables for five years in Manhattan before penning their novel, Turning Tables, out next week. Rose won’t name the restaurants they worked for, offering only that she was at one of the Ark Restaurants in Manhattan (it operates the Bryant Park Grill and others), while her sister worked at a defunct Italian restaurant in the Columbus Circle area. Nevertheless, she was quite candid about the industry she says she could only cope with via on-the-job hookups and shots snuck from behind the bar.